1 Scope
This document is applicable to fastening systems, in Categories A – D as specified
in EN 13481‑1:2012, 3.1 for attaching rails to the uppermost surface of concrete or steel elements in ballastless
tracks, including tracks on open deck bridges, and for embedded rails in ballastless
tracks, for maximum axle loads and minimum curve radii in accordance with Table 1.
Table 1
—
Fastening category criteria
|
Category
|
Maximum design axle load
kN
|
Minimum curve radius
m
|
| A |
130 |
40 |
| B |
180 |
80 |
| C |
260 |
150 |
| D |
260 |
400 |
The requirements apply to:
-
— fastening systems which act on the foot and/or web of the rail including direct fastening
systems and indirect fastening systems;
-
— fastening systems for rail sections included in EN 13674‑1 (excluding 49E4), or EN 13674‑4.
This document is not applicable to fastening systems for wood or polymer composite
sleepers used in ballastless track, which are included in EN 13481‑3.
This document is not applicable to rigid fastening systems, special fastening systems
used at bolted joints or glued joints or special low clamping force fastenings used
to mitigate track-bridge interaction effects.
This document is for type approval of complete fastening systems. In track forms in
which there are rail seat blocks or sleepers mounted in “boots” (under-sleeper pads)
the concrete element and its resilient support are considered to be parts of the elastic
fastening system. If the track form includes floating slabs, (i.e. resiliently supported
concrete elements with more than one fastening per rail) those concrete elements and
their resilient supports are considered to be parts of the ballastless track and not
of the fastening system.